Outer Limits 4x4 Board

Does anyone know how to get rid of the 'shudder'/ 'clicking' noise in the A/C vent mode linkages without removing/ replacing them? I heard if you use spray grease in just the right spot the noise will go away.
I've had a search and can't find any good info, and I don't have enough time to pull it apart to find the actual cause.

put ur head in drivers foot well with a torch look behind the centre concole get someone to work vent controls and use spray grease to lube the tracks in the white spinning wheel inside vent control box. hope this helps
may take a bit of grease and time.

Yeah I've tried that, there is a specific spot to do it but I can't seem to find it.